A brief article quartz accelerometer flexible
quartz accelerometer flexible support is a flexible technique so called quartz acceleration sensors, and the results with wild man structure and process greatly simplified formula. Currently this quartz flexible accelerometer has been widely used in various types of modern inertial system.
Quartz flexible working principle by which the acceleration sensor is a low temperature coefficient yoke good soft magnetic properties of magnetic material. Magnet relatively good magnetic properties using permanent magnetic material, with the grinding machine. The flexible sheet material is excellent in the temperature properties of quartz glass shape with ultrasonic processing, the processing of the flexible element commonly used chemical etching method; reactive ion etching process may be used throughout the flexible sheet, but are expensive.
Capacitance variation due to the differential of acceleration detected by the servo circuit of the differential capacitance detector, its output current, the output voltage into a current integrator, then the transconductance amplifier compensating voltage into an output current, the output current acceleration is proportional to the size of the input. British flexible uniaxial acceleration sensor as the torque feedback accelerometer detects acceleration by detecting the signal quality outside, and then the servo circuit demodulation, amplification, and finally an output current signal proportional to the acceleration signal.
Our products are widely used in aerospace precision navigation systems, inertial navigation, positioning navigation, attitude control or geological exploration SINS.
Quartz flexible performance acceleration sensor
measurement accuracy high
repeatability is
high reliability and small size
and light weight wide voltage supply
low power consumption
analog electrical output Specifications technical performance threshold range ± 60g (resolution) 1 × 10-5g bias value (K0) <4mg offset value (K0) drift <40μg / ℃ offset value (K0) stability 1mg scale factor (K1) 1.2 ~ 1.46mA / g .
This quartz flexible accelerometer usage scenarios missiles, aircraft, ships, tanks, underwater missile guidance system must have the speed and position information in demanding situations people use low air velocity meter, Mach sensor, odometer, etc. .
